Calnan’s Energy Systems, Inc.
Window & Door Installation in Waltham, MA · ★ 4.8 Google rating
Google rating as of October 2026. How ratings work here
- Address
- 105 Harvard St #5, Waltham, MA 02453
- Phone
- (781) 894-9626
- Website
- https://calnansenergy.com ↗
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About Calnan’s Energy Systems, Inc.
Calnan’s Energy Systems, Inc. is a Window & Door Installation contractor based in Waltham, Middlesex County, Massachusetts, at 105 Harvard St #5, Waltham, MA 02453. It has a Google rating of 4.8 out of 5. Its website is linked above. A listing here is not a license or insurance check, so verify both directly before hiring.
Service area
Based in Waltham, Calnan’s Energy Systems, Inc. is within a short drive of Weston (3 mi), Watertown (3 mi), Newton (3 mi), Belmont (4 mi), Lincoln (5 mi) and Wellesley (5 mi). Most Massachusetts window & door installation contractors work a 25-mile radius, so homeowners in those towns can reasonably ask for a quote.
Hiring a Window & Door Installation contractor in Waltham
The City of Waltham requires a permit through the Inspectional Services Department for any window or door replacement that changes the opening size, structural framing, or egress configuration. Like-for-like sash replacements typically don't need a permit but must meet current egress code. Properties in the Banks Square or Warrendale Historic District areas need additional Historical Commission review for visible exterior changes — sash material, profile, and muntin pattern come under review.
Window-and-door costs in Waltham sit close to Boston-city pricing — the Route 128 corridor commands a premium over the outer metro. Standard vinyl replacement windows typically run $650–$1,100 installed per opening; wood or composite for historic-compatible installs are $1,500–$3,100 per opening. Entry door replacement is typically $2,000–$5,200 installed depending on material and sidelite configuration. Multi-family work adds tenant-coordination overhead.
Massachusetts requires a written contract and a Home Improvement Contractor registration for most residential window & door installation work; ask for the registration number and check it before paying a deposit.
More on permits, costs, rebates and common questions, plus every other window & door installation contractor serving the town, on the Windows & Doors in Waltham page.
Other Windows & Doors contractors in Waltham
See all Windows & Doors in Waltham.